JP3078585B2 - Lens meter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens meter.

[0002]

2. Description of the Related Art Conventionally, when measuring the optical characteristics of a spectacle lens using a lens meter, it is known to perform a so-called marking operation for applying a marking point to a lens in order to clarify a measurement point. . Normally, the marking point marked by this marking work is one point on the measuring optical axis and two points on the same straight line sandwiching the one point.
It consists of three points. The optical center of the lens can be determined mainly by one central point among the three points, and the astigmatic axis angle can be determined by the other two points.

[0003]

However, the above-described marking method has the following disadvantages. That is, since the right-eye lens and the left-eye lens cannot be distinguished from each other in appearance with the conventional method of marking, it is necessary to store with considerable caution after finishing the marking work. If neglected, it cannot be determined.

The present invention has been devised in view of the above-mentioned drawbacks, and it is possible to easily determine whether the lens after the marking operation is for the right eye or the left eye, and to reduce the burden on the operator. It is a technical task to provide the data.

[0005]

In order to achieve the above object, the present invention is characterized by the following. (1) measuring optical system for measuring the optical properties of the spectacle lens
In the lens meter having, based on the measurement result
Indicates the direction of the optical center and astigmatic axis on the spectacle lens
Selectively eye mark for the first indicia point apparatus for applying a mark point, measured spectacle lens is determined right eye or left eye
A second marking device provided on the mirror lens .

(2) In the lens meter of (1)
The second marking device is a marker for applying on a spectacle lens.
Whether the mark should be a mark for the left eye or a mark for the right eye.
Select switch to select and mark selected mark to predetermined position
And a driving means for moving to the position .

(3 ) In the lens meter of (1)
The first marking device lowers the nib to apply the marking
Lowering means for causing a mark for the left eye or a mark for the right eye
The mark point mechanism is selectively connected to the lowering means and lowered.
Means .

[0008]

[0009]

[0010]

[0011]

[0012]

Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view of a lens meter. First, the overall configuration of the lens meter will be described. The lens meter includes a projection optical system for projecting a measurement index onto a lens to be measured, a lens mounting table for mounting the lens to be measured, a lens holder for pressing a lens mounted on the lens mounting table from above,
A detection optical system that receives measurement light transmitted through the lens to be detected and detects its deviation, a control system that controls the apparatus and performs calculations, a monitor that displays alignment marks and measurement results, and a measurement mode.
A switch group for selecting a mode or a display mode, and a marking device for marking a lens after measurement. In FIG. 1, 1 is a lens holder, 2 is a lens mounting table, and 3 is a marking device.

Next, the marking device 3 for this lens meter will be described. FIG. 2 is a side view having a partial cross section showing one embodiment, and FIG. 3 is a front view showing a main part of the marking device 3. Reference numeral 4 denotes a cylindrical mark support, which has an arm 5 at one end and is integrated with a slide portion 6 in the main body. The slide portion 6 moves up and down along a rail 7 fixed to the main body, and accordingly, the marking support 4 also moves up and down.
When the stamp support 4 is moved downward by a spring 8 spanned between the slide portion 6 and the rail 7, a force to return upward is applied.

As shown in FIG. 3, lids 9 and
10 is rotatably attached to the stamp support 4. 11 is a relay member, both ends of which are lids 9 and 10, respectively.
To prevent the lids 9 and 10 from falling off while rotating together with the lids 9 and 10. Further, the lid 10 is
The lids 9 and 10 including the shaft 12 and the relay member 11 are integrally rotatable about the shaft of the marking support 4, and are always urged by a spring 13 in one rotation direction. And
It is always in the state of FIG. An arm 14 is fixed to the relay member 11, and the three fingers are provided with marking members 15a, 15b and 15c, respectively, at the same interval on a straight line. The marking member has an ink pen tip at the tip and an ink bottle inside to apply a marking to the upper surface of the lens.

Reference numerals 16 and 17 each denote a mark member 1 at one end.
8 and 19, and the rotating members 16, 1
7 is pivotally supported by the stamp support 4 and the sleeves 20, 2 are provided.
1 restricts the movement in the axial direction and allows only rotation. The rotating members 16 and 17 are respectively
It is urged in one direction by 2 and 23 and is always in the state of FIG. Pins 24 and 25 are implanted in the rotating members 16 and 17, respectively. Reference numeral 26 denotes a lever integrally fixed to the lid 10. The lever 26 holds an interlocking plate 27 which can slide in a direction parallel to the marking support 4. The interlocking plate 27 has a scale as shown in FIG. 1 and slides between the scales R and L of the lever 26.
The interlocking plate 27 is provided with two notches 27a and 27b.

Next, the operation of this embodiment will be described. At the time when the measurement of the refractive power of the lens, etc. is completed,
5a, 15b, 15c, 18, 19 are in a horizontal position. If the lens for which the measurement was made is for the left,
Adjust the scale of 7 to L. At this time, the pin 24 overlaps the interlocking plate 27, but the pin 25 escapes from the interlocking plate 27 by the notch 27b (FIG. 3B). When the lever 26 is tilted 90 degrees in this state, the mark members 15a, 15b, 15c
Is integrated with the lever 26, so that the pen tip turns downward by 90 degrees, and at the same time, the pin 24 is pushed by the interlocking plate 27, and the rotating member 16 rotates 90 degrees, so that the pen tip of the marking member 18 moves downward. Turn to. In this state, if the lever 26 is pushed down, the mark points of the lens are formed by the mark members 15a, 15b, 15c and the mark member 18, and the mark is for the left eye as shown in FIG. I understand. The mark at the point is not limited to a point, and may be any kind of character such as L as shown in FIG. 4B.

Similarly, when the measured lens is for the right lens, the scale of the interlocking plate 27 is set to R. At this time, the pin 25 overlaps with the interlocking plate 27, but the pin 24 escapes from the interlocking plate 27 by the notch 27a (FIG. 3C).
When the lever 26 is tilted 90 degrees in this state, the stamping member 15a,
5b and 15c and the pen point of the marking member 19 face downward. In this state, if the lever 26 is pushed down, the position shown in FIG.
It can be seen that mark points as shown in FIG. The mark at the mark point is not limited to a point, and may be any character such as a character such as R as shown in FIG.

[0018]

Embodiment 2 Hereinafter, a second embodiment of the present invention will be described. FIG. 6 is a partial cross-sectional view showing the second embodiment. Parts common to the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Specifically, FIG. Reference numeral 31 denotes a lever integrally fixed to the lid 10.
Further, a pulse motor 32 shown in FIG. A guide screw 34 is attached to an output shaft 33 of the motor 32. This guide screw 3
Reference numeral 4 is screwed into a cylindrical connection shaft 35 having a female thread on one of the inner peripheral surfaces.

On the other hand, the extension 9 shown in FIG.
A guide shaft 37 is fixed to the extension portion 36 so as to be coaxial with the guide screw 34. The connection shaft 35 is also inserted into the guide shaft 37, and the guide groove 35 a provided in the axial direction engages with the screw 38 implanted in the guide shaft 37, so that rotation around the shaft is disabled. I have. Also, the AA cross section of the connecting shaft 35 is as shown in FIG. 7 and the BB cross section is as shown in FIG.
4 or the pin 25 may or may not overlap the connecting shaft 35.

Next, the operation of this embodiment will be described. At the time when the measurement of the refractive power of the lens, etc. is completed,
5a, 15b, 15c, 18, 19 are also in a horizontal position. If the measured lens is for the left lens, a left / right selection switch (not shown) is pressed and the pulse motor 3 is pressed.
2 to move the connecting shaft 35 to the left in FIG. Then, the pin 24 overlaps with the connecting shaft 35, but the pin 25 escapes from the connecting shaft 35. In this state, lever-3
When 1 is tilted 90 degrees, the marking members 15a, 15b, and 15c are integrated with the lever 31 so that they rotate 90 degrees so that the pen tip faces downward, and at the same time the pin 24 is placed on the connecting shaft 35 and the rotating member 16 is rotated. The pen point of the marking member 18 is turned downward by 90 degrees. In this state, if the lever 31 is pushed down, the stamping members 15a, 15b, 15c and the stamping member 18
Marking points of the lens are made, and it can be seen that the lens is for the left eye as shown in FIG.

Similarly, when the measured lens is for the right lens, the right / left selection switch (not shown) is pressed to drive the pulse motor 32 to move the connecting shaft 35 rightward in FIG. Then, the pin 25 overlaps with the connecting shaft 35, but the pin 24 escapes from the connecting shaft 35.
When the lever 31 is tilted 90 degrees in this state, the mark member 15a,
If the pen tips of 15b, 15c and the marking point member 19 face downward and push down the lever 31, the marking points as shown in FIG. It should be noted that the switch for selecting the left and right may be also used as a switch for specifying left and right for storing and displaying the measurement data.

[0022]

Embodiment 3 Hereinafter, a third embodiment of the present invention will be described. FIG. 9 is a partial sectional view showing the present embodiment, and FIG.
Is a plan view thereof. In FIG. 9, S denotes a lens for measurement, which is mounted on a lens mounting table 2 for measurement.
Reference numeral 1 denotes a lens holder, which has three legs that come into contact with the lens. As shown in the drawing, the lens presser 1 holds a right marking member 41 and a left marking member 42 in the vertical direction. The mark members 41 and 42 are respectively provided with an outer cylinder 43 suspended from the lens holder 1, a movable portion 44 integrally holding a button and an ink fountain and movable along the outer cylinder 43, and an outer cylinder 43. And a spring 45 that hangs between the movable part 44 and urges the movable part 44 upward.

The operation of this embodiment will be described below.
The lens S mounted on the lens mounting table 2 is fixed by the lens holder 1, and the measurement of the refractive power and the like is performed. After this measurement, a mark point is made at two points sandwiching the optical center by a known mark point member (not shown). However, it cannot be determined from the above three points whether the lens is for the right or for the left. Therefore, if the lens is for the right, the button of the right marking member 41 is pressed and a mark such as "R" is printed. Similarly, when the left lens is used, the button of the left mark member 42 is pressed and a mark such as "L" is printed to distinguish the left and right.

[0024]

According to the lens meter of the present invention, it is possible to easily determine whether the lens after the marking operation is for the right eye or the left eye, thereby reducing the burden on the operator. .

[Brief description of the drawings]

FIG. 1 is an external perspective view of a lens meter.

FIG. 2 is a side view with a partial cross section of the marking device.

FIG. 3 is a front view showing a main part of the marking device.

FIG. 4 is an explanatory diagram showing a state of a mark point in the case of a left-eye lens.

FIG. 5 is an explanatory diagram showing a state of a mark point in the case of a right-eye lens.

FIG. 6 is a partial sectional view showing a marking device.

FIG. 7 is a sectional view taken along the line AA of FIG. 6;

FIG. 8 is a sectional view taken along the line BB of FIG. 6;

FIG. 9 is a partial cross-sectional view illustrating a marking device according to a third embodiment.

FIG. 10 is a partial plan view of FIG. 9;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Lens holding | maintenance 2 Lens mounting stand 3 Marking device 15a, 15b, 15c, 18, 19, 41, 42 Marking member

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G01M 11/00-11/02 G02C ⁷ /00-7/08

Claims (3)

(57) [Claims] 1. A measurement for measuring the optical properties of the spectacle lens
Measurement results of a lens meter with an optical system
Direction of the optical center and the astigmatic axis on the lens for eyeglasses based on
Select the mark for the first indicia point apparatus for applying a mark point, is measured les <br/> lens glasses to determine right eye or left eye showing the
A second marking device that is provided on the spectacle lens.
Lens meter, characterized in that that. 2. The lens meter according to claim 1, wherein
The second marking device sets the mark on the spectacle lens to the left.
Select whether to use an eye mark or a right eye mark
Select switch and move the selected mark to a predetermined position.
A lens meter comprising: a driving unit that moves. 3. The lens meter according to claim 1, wherein
The first marking device lowers the nib to make a marking
Lowering means and mark points for left eye mark or right eye mark
Means for selectively connecting a mechanism to the lowering means to lower the mechanism;
Lens meter, characterized in that it comprises a.